54379-93-0Relevant academic research and scientific papers
TAUTOMERIC TRANSFORMATIONS AND COLOR OF MONOAZO DYES. VI. DYES BASED ON 2-SUBSTITUTED 1-NAPHTHOLS
Traven', V. F.,Tsygankova, A. M.,Stepanov, B. I.
, p. 1402 - 1407 (2007/10/02)
The composition of the solvent and the structure of the monoazo dyes based on 1-naphthol and its derivatives, containing substituents at position 2, have a significant effect on the absorption spectra of their solutions.The CONHR and COOH groups at position 2 stabilize the quinone hydrazone form, while the COOEt group stabilizes the azo form of the dyes (1-naphthol derivatives).In contrast to 1-(4-X-phenylazo)-2-naphthols, dyes based on 1-naphthol in the gas phase exist almost exclusively in the azo form, while their molecular ions have comparatively low stability.
